Abstract

1410312 Valves PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 10 Jan 1974 [6 Feb 1973] 01230/74 Heading F2V [Also in Division F1] A valve has a closure member 2 actuated by a rod-like member 12 comprising stacked laminations 13 of a piezo-electric material. The member 12 may be connected directly or, as shown, by a hydrostatic bearing 15 to the closure member and the laminations are similarly polarized, with insulation layers between them. The closure member controls communication between a service port 8 and supply and discharge ports 6, 7. In a second embodiment, the rod-like member has a passage (38, Fig. 3) forming part of the outlet of a fuel injection valve and deflects a diaphragm (32) in relation to an annular seat (44).